Refractive Index :

2.192 at 10.6 μm

Reflection Loss :

24.6% at 10.6 μm (2 surfaces)

Absorption Coefficient   :

0.02 cm^-1 at 3.8 μm

Reststrahlen Peak :

30.5 μm

dn/dT :

+43 x 10^-6/°C at 3.39 μm

dn/dμ = 0 :

n/a

Density :

4.08 g/cc

Melting Point :

1827°C (See notes below)

Thermal Conductivity :

16.7 W m^-1 K^-1 at   296K

Thermal Expansion :

6.6 x 10^-6 /°C at 273K

Hardness :

Knoop 240 with 50g indenter

Specific Heat Capacity   :

469 J Kg^-1 K^-1

Dielectric Constant :

n/a

Youngs Modulus (E) :

74.5 GPa

Shear Modulus (G) :

n/a

Bulk Modulus (K) :

n/a

Elastic Coefficients :

Noy Available

Apparent Elastic Limit   :

103.4 MPa (15,000 psi)

Poisson Ratio :

0.29

Solubility :

65 x 10^-6 g/100g water

Molecular Weight :

97.43

Class/Structure :

Polycrystalline cubic, ZnS, F43m

0.42

2.516

0.46

2.458

0.50

2.419

0.54

2.391

0.58

2.371

0.62

2.355

0.66

2.342

0.70

2.332

0.74

2.323

0.78

2.316

0.82

2.31

0.86

2.305

0.90

2.301

0.94

2.297

0.98

2.294

1.00

2.292

1.40

2.275

1.80

2.267

2.20

2.263

2.60

2.26

3.00

2.257

3.40

2.255

3.80

2.253

4.20

2.251

4.60

2.248

5.00

2.246

5.40

2.244

5.80

2.241

6.20

2.238

6.60

2.235

7.00

2.232

7.40

2.228

7.80

2.225

8.20

2.221

8.60

2.217

9.00

2.212

9.40

2.208

9.80

2.203

10.2

2.198

10.6

2.192

11.0

2.186

11.4

2.18

11.8

2.173

12.2

2.167

12.6

2.159

13.0

2.152

13.4

2.143

13.8

2.135

14.2

2.126

14.6

2.116

15.0

2.106

15.4

2.095

15.8

2.084

16.2

2.072

16.6

2.059

17.0

2.045

17.4

2.03

17.8

2.015

18.2

1.998